09-Pagination add explore

controller/home.go

@@ -20,6 +20,7 @@ func (h home) registerRoutes() {
 	r.HandleFunc("/follow/{username}", middleAuth(followHandler))
 	r.HandleFunc("/unfollow/{username}", middleAuth(unFollowHandler))
 	r.HandleFunc("/profile_edit", middleAuth(profileEditHandler))
+	r.HandleFunc("/explore", middleAuth(exploreHandler))
 	r.HandleFunc("/", middleAuth(indexHandler))
 
 	http.Handle("/", r)
@@ -183,3 +184,12 @@ func unFollowHandler(w http.ResponseWriter, r *http.Request) {
 	}
 	http.Redirect(w, r, fmt.Sprintf("/user/%s", pUser), http.StatusSeeOther)
 }
+
+func exploreHandler(w http.ResponseWriter, r *http.Request) {
+	tpName := "explore.html"
+	vop := vm.ExploreViewModelOp{}
+	username, _ := getSessionUser(r)
+	page := getPage(r)
+	v := vop.GetVM(username, page, pageLimit)
+	templates[tpName].Execute(w, &v)
+}

model/post.go

@@ -33,3 +33,18 @@ func GetPostsByUserIDPageAndLimit(id, page, limit int) (*[]Post, int, error) {
 	db.Model(&Post{}).Where("user_id=?", id).Count(&total)
 	return &posts, total, nil
 }
+
+// GetPostsByPageAndLimit func
+func GetPostsByPageAndLimit(page, limit int) (*[]Post, int, error) {
+	var total int
+	var posts []Post
+
+	offset := (page - 1) * limit
+	if err := db.Preload("User").Offset(offset).Limit(limit).Order("timestamp desc").Find(&posts).Error; err != nil {
+		return nil, total, err
+	}
+
+	db.Model(&Post{}).Count(&total)
+
+	return &posts, total, nil
+}

templates/_base.html

@@ -10,6 +10,7 @@
         <div>
             Blog: 
             <a href="/">Home</a>
+            <a href="/explore">Explore</a>
             {{if .CurrentUser}}
             <a href="/user/{{.CurrentUser}}">Profile</a>
             <a href="/logout">Logout</a>

templates/content/explore.html

@@ -0,0 +1,19 @@
+{{define "content"}}
+    <h1>Hello, {{.CurrentUser}}!</h1>
+
+    {{range .Posts}}
+        <table>
+            <tr valign="top">
+                <td><img src="{{.User.Avatar}}&s=36"></td>
+                <td><a href="/user/{{.User.Username}}">{{ .User.Username }}</a> says:<br>{{ .Body }}</td>
+            </tr>
+        </table>
+    {{end}}
+
+    {{ if gt .PrevPage 0 }}
+        <a href="/explore?page={{.PrevPage}}">Newer posts</a>
+    {{ end }}
+    {{ if gt .NextPage 0 }}
+        <a href="/explore?page={{.NextPage}}">Older posts</a>
+    {{ end }}
+{{end}}

vm/explore.go

@@ -0,0 +1,25 @@
+package vm
+
+import "github.com/bonfy/go-mega-code/model"
+
+// ExploreViewModel struct
+type ExploreViewModel struct {
+	BaseViewModel
+	Posts []model.Post
+	BasePageViewModel
+}
+
+// ExploreViewModelOp struct
+type ExploreViewModelOp struct{}
+
+// GetVM func
+func (ExploreViewModelOp) GetVM(username string, page, limit int) ExploreViewModel {
+	// posts, _ := model.GetAllPosts()
+	posts, total, _ := model.GetPostsByPageAndLimit(page, limit)
+	v := ExploreViewModel{}
+	v.SetTitle("Explore")
+	v.Posts = *posts
+	v.SetBasePageViewModel(total, page, limit)
+	v.SetCurrentUser(username)
+	return v
+}